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• FFmpeg using png with tranparency and exclusion blending mode

  27 août 2016, par moorej

  I’m trying to use the exclusion blending mode to blend together a video and a png with transparency. I’ve looked around quite a bit but I can’t find a solution that works for me. Here’s the ffmpeg command :

  ffmpeg -i movie.mkv -i text_white_bg_trans.png -filter_complex\
  
    "[1:v]setsar=sar=1,format=rgba[txt]; [0:v]format=rgba[mo]; [mo][txt]blend=all_mode='exclusion'"  out_exclusion.mkv

  Edit : and the console output :

  ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
  
    built with Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
  
    configuration: --prefix=/opt/local --enable-swscale --enable-avfilter --enable-avresample --enable-libmp3lame --enable-libvorbis --enable-libopus --enable-libtheora --enable-libschroedinger --enable-libopenjpeg --enable-libmodplug --enable-libvpx --enable-libsoxr --enable-libspeex --enable-libass --enable-libbluray --enable-lzma --enable-gnutls --enable-fontconfig --enable-libfreetype --enable-libfribidi --disable-indev=jack --disable-outdev=xv --mandir=/opt/local/share/man --enable-shared --enable-pthreads --cc=/usr/bin/clang --enable-vda --enable-videotoolbox --arch=x86_64 --enable-yasm --enable-gpl --enable-postproc --enable-libx264 --enable-libxvid
  
    libavutil      55. 17.103 / 55. 17.103
  
    libavcodec     57. 24.102 / 57. 24.102
  
    libavformat    57. 25.100 / 57. 25.100
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 31.100 /  6. 31.100
  
    libavresample   3.  0.  0 /  3.  0.  0
  
    libswscale      4.  0.100 /  4.  0.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  Input #0, matroska,webm, from 'movie.mkv':
  
    Metadata:
  
      ENCODER         : Lavf57.25.100
  
    Duration: 00:00:11.88, start: 0.000000, bitrate: 5143 kb/s
  
      Stream #0:0: Video: h264 (High), yuv420p, 1640x1232, SAR 1:1 DAR 205:154, 25 fps, 25 tbr, 1k tbn, 50 tbc (default)
  
      Metadata:
  
        ENCODER         : Lavc57.24.102 libx264
  
        DURATION        : 00:00:11.880000000
  
  Input #1, png_pipe, from 'text_white_bg_trans.png':
  
    Duration: N/A, bitrate: N/A
  
      Stream #1:0: Video: png, rgba(pc), 1640x1232, 25 tbr, 25 tbn, 25 tbc
  
  File 'out_exclusion.mkv' already exists. Overwrite ? [y/N] y
  
  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 0x7fb10a01e200] using SAR=1/1
  
  [libx264 @ 0x7fb10a01e200] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 0x7fb10a01e200] profile High 4:4:4 Predictive, level 4.0, 4:4:4 8-bit
  
  [libx264 @ 0x7fb10a01e200] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=4 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, matroska, to 'out_exclusion.mkv':
  
    Metadata:
  
      encoder         : Lavf57.25.100
  
      Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv444p, 1640x1232 [SAR 1:1 DAR 205:154], q=-1--1, 25 fps, 1k tbn, 25 tbc (default)
  
      Metadata:
  
        encoder         : Lavc57.24.102 libx264
  
      Side data:
  
        unknown side data type 10 (24 bytes)
  
  Stream mapping:
  
    Stream #0:0 (h264) -> format
  
    Stream #1:0 (png) -> setsar
  
    blend -> Stream #0:0 (libx264)
  
  Press [q] to stop, [?] for help
  
  frame=   24 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   47 fps= 40 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=   61 fps= 36 q=28.0 size=      96kB time=00:00:00.12 bitrate=6567.3kbitsframe=   70 fps= 32 q=28.0 size=     264kB time=00:00:00.48 bitrate=4513.9kbitsframe=   83 fps= 30 q=28.0 size=     498kB time=00:00:01.00 bitrate=4079.5kbitsframe=   95 fps= 29 q=28.0 size=     691kB time=00:00:01.48 bitrate=3827.5kbitsframe=  106 fps= 28 q=28.0 size=     896kB time=00:00:01.92 bitrate=3823.7kbitsframe=  118 fps= 27 q=28.0 size=    1132kB time=00:00:02.40 bitrate=3863.7kbitsframe=  130 fps= 26 q=28.0 size=    1338kB time=00:00:02.88 bitrate=3806.1kbitsframe=  142 fps= 26 q=28.0 size=    1588kB time=00:00:03.36 bitrate=3871.7kbitsframe=  154 fps= 25 q=28.0 size=    1808kB time=00:00:03.84 bitrate=3856.9kbitsframe=  166 fps= 25 q=28.0 size=    2062kB time=00:00:04.32 bitrate=3910.9kbitsframe=  178 fps= 24 q=28.0 size=    2328kB time=00:00:04.80 bitrate=3972.8kbitsframe=  190 fps= 24 q=28.0 size=    2620kB time=00:00:05.28 bitrate=4064.7kbitsframe=  203 fps= 24 q=28.0 size=    2886kB time=00:00:05.80 bitrate=4076.0kbitsframe=  215 fps= 24 q=28.0 size=    3132kB time=00:00:06.28 bitrate=4085.9kbitsframe=  226 fps= 24 q=28.0 size=    3357kB time=00:00:06.72 bitrate=4092.5kbitsframe=  238 fps= 24 q=28.0 size=    3589kB time=00:00:07.20 bitrate=4083.9kbitsframe=  250 fps= 23 q=28.0 size=    3794kB time=00:00:07.68 bitrate=4047.3kbitsframe=  260 fps= 23 q=28.0 size=    3978kB time=00:00:08.08 bitrate=4032.7kbitsframe=  272 fps= 23 q=28.0 size=    4212kB time=00:00:08.56 bitrate=4031.0kbitsframe=  284 fps= 23 q=28.0 size=    4453kB time=00:00:09.04 bitrate=4035.3kbitsframe=  295 fps= 23 q=28.0 size=    4632kB time=00:00:09.48 bitrate=4002.9kbitsframe=  297 fps= 20 q=-1.0 Lsize=    5559kB time=00:00:11.80 bitrate=3859.4kbits/s speed=0.808x    
  
  video:5556kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.053747%
  
  [libx264 @ 0x7fb10a01e200] frame I:2     Avg QP:21.70  size: 56001
  
  [libx264 @ 0x7fb10a01e200] frame P:178   Avg QP:23.12  size: 24833
  
  [libx264 @ 0x7fb10a01e200] frame B:117   Avg QP:25.78  size:  9886
  
  [libx264 @ 0x7fb10a01e200] consecutive B-frames: 29.3% 49.8% 14.1%  6.7%
  
  [libx264 @ 0x7fb10a01e200] mb I  I16..4:  9.5% 75.0% 15.5%
  
  [libx264 @ 0x7fb10a01e200] mb P  I16..4:  4.0% 14.8%  1.0%  P16..4: 43.3% 12.0%  4.5%  0.0%  0.0%    skip:20.4%
  
  [libx264 @ 0x7fb10a01e200] mb B  I16..4:  0.6%  1.9%  0.1%  B16..8: 48.5%  4.2%  0.3%  direct: 0.6%  skip:43.8%  L0:42.5% L1:55.6% BI: 1.9%
  
  [libx264 @ 0x7fb10a01e200] 8x8 transform intra:74.8% inter:85.5%
  
  [libx264 @ 0x7fb10a01e200] coded y,u,v intra: 31.3% 0.0% 0.0% inter: 15.0% 0.0% 0.0%
  
  [libx264 @ 0x7fb10a01e200] i16 v,h,dc,p: 30% 32% 13% 25%
  
  [libx264 @ 0x7fb10a01e200] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 22% 32%  3%  4%  3%  6%  3%  3%
  
  [libx264 @ 0x7fb10a01e200] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 33% 16%  3%  4%  3%  9%  4%  2%
  
  [libx264 @ 0x7fb10a01e200] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 0x7fb10a01e200] ref P L0: 72.2% 17.9%  7.5%  2.5%
  
  [libx264 @ 0x7fb10a01e200] ref B L0: 90.9%  8.6%  0.5%
  
  [libx264 @ 0x7fb10a01e200] ref B L1: 98.6%  1.4%
  
  [libx264 @ 0x7fb10a01e200] kb/s:3830.94

  Edit : Here’s a frame from the output.
  
  The output video is B&W rather than the original color (not sure why). The rectangle in the image is located where there is a block of text on a png with a transparent background. The png is the same size as the video.

  I’m expecting something more like this :
  

  @Mulvya suggestion fixed the issue with color but I’m still seeing some problems with transparency being handled. I’m attaching a few different images below that each create different problems. All created in Photoshop CC (therein may lie the problem).

  A transparent background with a separate text layer that is then exported by Save->png, Photoshop appears to merge these two layers but differently than when "merge layers" is chosen before export. The exported image looks like the B&W image I posted above but with color.

  The in the second I merge the layers before exporting. It appears the entire image is treated as white.

  In the third I draw "hello" on a transparent layer with a "soft" brush using different grays then export. Transparent areas are rendered as white, gray or translucent areas opaque or with a strange dithering "effect."

  It seems I’m moving outside the realm of StackOverflow, but I’m not sure where this post would be better suited.
  1
  
  2
  
  3
  

• ffmpeg concatenation after using drawtext filter

  12 août 2016, par Sven Hoskens

  I’m fairly new to ffmpeg, but after a few days of searching on this issue, I’ve completely hit a brick wall. Any help would be appreciated.

  My use case : Our client wants to upload videos for multiple regions. Each video will be the same format, 1920x1080, mp4. For each region, they want to add a different image at the end of the video, for a few seconds. This image contains their logo, some additional info, and a variable code. They will enter this code alongside the uploaded video. The image stays the same, so is already present on the server.
  So basically, I have an input video, a video of an image, and a small code. I need to add this code to the video of the image (in a predefined position), and then I need to add the resulting video to the end of the input video. Once that is complete, I just need to output the video in 1920x1080 and in 1024x576.

  I have tried several things, but the concatenation step always fails with the manipulated video’s.

  Attempt 1

  In my first attempt, I used ffmpeg to create a video from an image, and add the text in the designated area.

  ffmpeg -y -f lavfi -i image.png -r 30 -t 10 -pix_fmt yuv420p -map 0:v -vf drawtext="fontfile=HelveticaNeue.dfont: text='GLNS/TEST/1234b': fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=7: x=179: y=805" imageVideo.mp4

  This command creates a .mp4 video of the correct size, with a duration of 10 seconds, and adds the text ’GLNS/TEST/1234b’ in the correct location.

  Next, I use the following command to concatenate the two videos. Both have the same resolution and codec.

  ffmpeg -f concat -safe 0 -i config.txt -vf scale=1920:1080 outputHD.mp4 -vf scale=1024:576 outputSD.mp4

  config.txt contains following :

  file my_input_file.mp4
  
  file ImageVideo.mp4

  This concatenation works with regular videos. However, when I use it with ImageVideo.mp4 (the one created by the first command) I get this error log :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f86dc924600] Auto-inserting h264_mp4toannexb bitstream filtereed=0.509x    
  
  [aac @ 0x7f86dc019e00] Number of bands (31) exceeds limit (5).
  
  Error while decoding stream #0:1: Invalid data found when processing input
  
  [aac @ 0x7f86dc019e00] Number of bands (27) exceeds limit (8).
  
  Error while decoding stream #0:1: Invalid data found when processing input
  
  [h264 @ 0x7f86dd857200] Error splitting the input into NAL units.
  
  [h264 @ 0x7f86dd829400] Invalid NAL unit size.
  
  [h264 @ 0x7f86dd829400] Error splitting the input into NAL units.
  
  [aac @ 0x7f86dc019e00] Number of bands (10) exceeds limit (1).
  
  Error while decoding stream #0:1: Invalid data found when processing input
  
  [h264 @ 0x7f86dd816800] Invalid NAL unit size.
  
  [h264 @ 0x7f86dd816800] Error splitting the input into NAL units.
  
  [aac @ 0x7f86dc019e00] Number of bands (24) exceeds limit (1).
  
  Error while decoding stream #0:1: Invalid data found when processing input
  
  
  
  #this goes on for a few hundred lines

  The resulting output is identical to the input video, but does not contain the desired image video at the end.

  Attempt 2

  Since the above attempt didn’t work, I tried concatenating a video I let our designer make of the image with Adobe After Effects. This video was also saved as a .mp4 with the H264 codec. If I concatenate the input video and this one, I get a correct result. However, as soon as I add the code in the designated area with this command :

  ffmpeg -i new_image_video.mp4 -vf drawtext="fontfile=HelveticaNeue.dfont: text='GLNS/TEST/1234b': fontcolor=black: fontsize=20: box=1: boxcolor=white: boxborderw=7: x=179: y=805" -c:v libx264 imageVideo.mp4

  I get this error :

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7ff94c800000] Auto-inserting h264_mp4toannexb bitstream filter97x    
  
  [h264 @ 0x7ff94b053800] top block unavailable for requested intra mode -1
  
  [h264 @ 0x7ff94b053800] error while decoding MB 0 0, bytestream 49526
  
  [h264 @ 0x7ff94b053e00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one
  
  [h264 @ 0x7ff94b053e00] chroma_log2_weight_denom 28 is out of range
  
  [h264 @ 0x7ff94b053e00] illegal long ref in memory management control operation 2
  
  [h264 @ 0x7ff94b053e00] cabac_init_idc 32 overflow
  
  [h264 @ 0x7ff94b053e00] decode_slice_header error
  
  [h264 @ 0x7ff94b053e00] no frame!
  
  [h264 @ 0x7ff94b053800] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
  
  [h264 @ 0x7ff94b072a00] reference overflow 22 > 15 or 0 > 15
  
  [h264 @ 0x7ff94b072a00] decode_slice_header error
  
  [h264 @ 0x7ff94b072a00] no frame!
  
  [h264 @ 0x7ff94b01a400] illegal modification_of_pic_nums_idc 20
  
  [h264 @ 0x7ff94b01a400] decode_slice_header error
  
  [h264 @ 0x7ff94b01a400] no frame!
  
  [h264 @ 0x7ff94b01aa00] illegal modification_of_pic_nums_idc 20
  
  [h264 @ 0x7ff94b01aa00] decode_slice_header error
  
  [h264 @ 0x7ff94b01aa00] no frame!
  
  Error while decoding stream #0:0: Invalid data found when processing input
  
  [h264 @ 0x7ff94b053800] deblocking_filter_idc 8 out of range
  
  [h264 @ 0x7ff94b053800] decode_slice_header error
  
  [h264 @ 0x7ff94b053800] no frame!
  
  Error while decoding stream #0:0: Invalid data found when processing input
  
  [h264 @ 0x7ff94b053e00] illegal memory management control operation 8
  
  [h264 @ 0x7ff94b053e00] co located POCs unavailable
  
  [h264 @ 0x7ff94b053e00] error while decoding MB 2 0, bytestream -35
  
  [h264 @ 0x7ff94b053e00] concealing 8160 DC, 8160 AC, 8160 MV errors in B frame
  
  [h264 @ 0x7ff94b072a00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one
  
  
  
  # this goes on for a while...
  
  
  
  [h264 @ 0x7ff94b01a400] concealing 4962 DC, 4962 AC, 4962 MV errors in B frame
  
  Error while decoding stream #0:0: Invalid data found when processing input
  
  frame= 2553 fps= 17 q=-1.0 Lsize=   26995kB time=00:01:42.16 bitrate=2164.6kbits/s dup=0 drop=60 speed=0.697x    
  
  video:25258kB audio:1661kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.285236%
  
  [libx264 @ 0x7ff94b810400] frame I:35    Avg QP:17.45  size: 55070
  
  [libx264 @ 0x7ff94b810400] frame P:711   Avg QP:19.73  size: 18712
  
  [libx264 @ 0x7ff94b810400] frame B:1807  Avg QP:21.53  size:  5884
  
  [libx264 @ 0x7ff94b810400] consecutive B-frames:  3.4%  5.0%  4.9% 86.6%
  
  [libx264 @ 0x7ff94b810400] mb I  I16..4: 38.2% 49.3% 12.5%
  
  [libx264 @ 0x7ff94b810400] mb P  I16..4: 12.4% 14.0%  1.0%  P16..4: 29.6%  4.8%  1.9%  0.0%  0.0%    skip:36.2%
  
  [libx264 @ 0x7ff94b810400] mb B  I16..4:  1.5%  1.2%  0.1%  B16..8: 27.3%  1.6%  0.1%  direct: 1.8%  skip:66.4%  L0:45.8% L1:51.4% BI: 2.8%
  
  [libx264 @ 0x7ff94b810400] 8x8 transform intra:49.5% inter:85.4%
  
  [libx264 @ 0x7ff94b810400] coded y,uvDC,uvAC intra: 21.2% 22.3% 2.5% inter: 4.6% 7.0% 0.0%
  
  [libx264 @ 0x7ff94b810400] i16 v,h,dc,p: 23% 26% 10% 41%
  
  [libx264 @ 0x7ff94b810400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 19% 35%  3%  3%  3%  3%  3%  2%
  
  [libx264 @ 0x7ff94b810400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 20% 16%  5%  7%  6%  5%  5%  4%
  
  [libx264 @ 0x7ff94b810400] i8c dc,h,v,p: 67% 16% 15%  2%
  
  [libx264 @ 0x7ff94b810400] Weighted P-Frames: Y:7.3% UV:4.2%
  
  [libx264 @ 0x7ff94b810400] ref P L0: 66.3%  8.7% 17.9%  7.0%  0.1%
  
  [libx264 @ 0x7ff94b810400] ref B L0: 88.2% 10.1%  1.7%
  
  [libx264 @ 0x7ff94b810400] ref B L1: 94.9%  5.1%
  
  [libx264 @ 0x7ff94b810400] kb/s:2026.12
  
  [aac @ 0x7ff94b072400] Qavg: 635.626

  The resulting output is identical to the input video, but does not contain the desired image video at the end.

  One thing I have noticed : When I inspect the video files on mac (Get info) they always contain these lines at ’More info’ :

  Dimensions: 1920 x 1080
  
  Codecs: H.264, AAC
  
  Color profile: HD(1-1-1)
  
  Duration: 01:42
  
  Audio channels: 2
  
  Last opened: Today 11:02

  However, the video’s which pass through the drawtext filter have this :

  Dimensions: 1920 x 1080
  
  Codecs: AAC, H.264
  
  Duration: 00:10
  
  Audio channels: 2
  
  Last opened: Today 11:07

  As you can see, there is no color profile entry, and the codecs have switched places. I assume this is related to my issue, but I can’t seem to find a fix for it.

  PS : The application will run in a php environment (Symfony). I noticed the concat command wasn’t available in the Symfony bundle for ffmpeg, so I’m using the regular terminal commands. I’ll execute these using php.

  EDIT
  Attempt 3

  On advise of a coworker, I tried converting the video to .avi and reconverting to .mp4, in the hopes this would lose any corrupted or extra info included by the drawtext filter. This spits out a completely different error.

  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f812413da00] Auto-inserting h264_mp4toannexb bitstream filtereed=0.516x    
  
  [concat @ 0x7f8124009a00] DTS 1569260 < 2551000 out of order
  
  [h264 @ 0x7f8124846800] left block unavailable for requested intra4x4 mode -1
  
  [h264 @ 0x7f8124846800] error while decoding MB 0 0, bytestream 47919
  
  [h264 @ 0x7f8124846800] concealing 8160 DC, 8160 AC, 8160 MV errors in I frame
  
  [aac @ 0x7f8125809a00] Queue input is backward in time
  
  [aac @ 0x7f8125815a00] Queue input is backward in time
  
  [h264 @ 0x7f8124846e00] number of reference frames (1+3) exceeds max (3; probably corrupt input), discarding one
  
  [h264 @ 0x7f8124846e00] chroma_log2_weight_denom 26 is out of range
  
  [h264 @ 0x7f8124846e00] deblocking_filter_idc 32 out of range
  
  [h264 @ 0x7f8124846e00] decode_slice_header error
  
  [h264 @ 0x7f8124846e00] no frame!
  
  [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902912, current: 4505491; changing to 4902913. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902912, current: 4505491; changing to 4902913. This may result in incorrect timestamps in the output file.
  
  [h264 @ 0x7f8124803400] reference overflow 20 > 15 or 0 > 15
  
  [h264 @ 0x7f8124803400] decode_slice_header error
  
  [h264 @ 0x7f8124803400] no frame!
  
  [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902913, current: 4506515; changing to 4902914. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902913, current: 4506515; changing to 4902914. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7f8124802200] Non-monotonous DTS in output stream 0:1; previous: 4902914, current: 4507539; changing to 4902915. This may result in incorrect timestamps in the output file.
  
  [mp4 @ 0x7f8125813000] Non-monotonous DTS in output stream 1:1; previous: 4902914, current: 4507539; changing to 4902915. This may result in incorrect timestamps in the output file.
  
  
  
  # Again, this continues for quite a while.

• Decoding Video using FFMpeg for android

  29 novembre 2014, par Rahul Upadhyay

  I tried to decode video using FFMpeg library from the sample examples available on internet, i figure it out with new version of ffmpeg,
  here is the code which I called from my class file,

     private static native int decodeVideo(String filename);
  
     decodeVideo(getString(R.string._sdcard_abc_3gp));

  now in .c file located in JNI dir,I wrote this code,

   jint Java_ru_dzakhov_ffmpeg_test_MainActivity_decodeVideo(JNIEnv* env, jobject
  
  javaThis,jstring filename) {   
  
    AVFormatContext *pFormatCtx;
  
    int             i, videoStream;
  
    AVCodecContext  *pCodecCtx;
  
    AVCodec         *pCodec;
  
    AVFrame         *pFrame;
  
    AVFrame         *pFrameRGB;
  
    AVPacket        packet;
  
    int             frameFinished;
  
    int             numBytes;
  
    uint8_t         *buffer;
  
  
  
    // Register all formats and codecs
  
    av_register_all();
  
  
  
    // Open video file
  
  
  
        const jbyte *str;
  
        str = (*env)->GetStringUTFChars(env, filename, NULL);
  
  
  
        if(av_open_input_file(&pFormatCtx, str, NULL, 0, NULL)!=0)
  
        {
  
            LOGI("Can't open file '%s'\n", str);
  
            return 1;
  
        }
  
        else
  
        {
  
            LOGI("File is opened\n");
  
            LOGI("File '%s', Codec %s",pFormatCtx->filename,pFormatCtx->iformat->name);
  
        }
  
  
  
  
  
    // Dump information about file onto standard error
  
  
  
    LOGI("dump_format");
  
    dump_format(pFormatCtx, 0, filename, 0);
  
    LOGI("dump_format DONE");
  
    // Find the first video stream
  
    videoStream=-1;
  
    for(i=0; inb_streams; i++)
  
      if(pFormatCtx->streams[i]->codec->codec_type==CODEC_TYPE_VIDEO)
  
        //if(pFormatCtx->streams[i]->codec->codec_type==AVMEDIA_TYPE_VIDEO)
  
        {
  
            LOGI("videoStream:: %d",videoStream);
  
        videoStream=i;
  
        break;
  
      }
  
    if(videoStream==-1)
  
      return -1; // Didn't find a video stream
  
  
  
    // Get a pointer to the codec context for the video stream
  
    pCodecCtx=pFormatCtx->streams[videoStream]->codec;
  
  
  
    // Find the decoder for the video stream
  
    pCodec=avcodec_find_decoder(pCodecCtx->codec_id);
  
    if(pCodec==NULL) {
  
      fprintf(stderr, "Unsupported codec!\n");
  
      LOGI("Unsupported codec!\n");
  
      return -1; // Codec not found
  
    }
  
    // Open codec
  
    if(avcodec_open(pCodecCtx, pCodec)<0){
  
        LOGI("Codec Opened!\n");
  
      return -1; // Could not open codec
  
    }
  
    // Allocate video frame
  
    pFrame=avcodec_alloc_frame();
  
  
  
    // Allocate an AVFrame structure
  
    pFrameRGB=avcodec_alloc_frame();
  
    if(pFrameRGB==NULL){
  
  
  
        LOGI("checking --->>> pFrameRGB==NULL\n");
  
      return -1;
  
    }
  
    // Determine required buffer size and allocate buffer
  
  
  
    LOGI("Determine required buffer size and allocate buffer\n");
  
    numBytes=avpicture_get_size(PIX_FMT_RGB24, pCodecCtx->width,
  
                                pCodecCtx->height);
  
  
  
    LOGI("numBytes %d",numBytes);
  
  
  
    buffer=(uint8_t *)av_malloc(numBytes*sizeof(uint8_t));
  
  
  
    // Assign appropriate parts of buffer to image planes in pFrameRGB
  
    // Note that pFrameRGB is an AVFrame, but AVFrame is a superset
  
    // of AVPicture
  
    avpicture_fill((AVPicture *)pFrameRGB, buffer, PIX_FMT_RGB24,
  
                   pCodecCtx->width, pCodecCtx->height);
  
  
  
    // Read frames and save first five frames to disk
  
    i=0;
  
    while(av_read_frame(pFormatCtx, &packet)>=0) {
  
      // Is this a packet from the video stream?
  
      if(packet.stream_index==videoStream) {
  
        // Decode video frame
  
          avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished,&packet);
  
                             //packet.data, packet.size);
  
  
  
        // Did we get a video frame?
  
        if(frameFinished) {
  
          // Convert the image from its native format to RGB
  
          /*Temporarily down
  
           *
  
           * img_convert((AVPicture *)pFrameRGB, PIX_FMT_RGB24,
  
                      (AVPicture*)pFrame, pCodecCtx->pix_fmt, pCodecCtx->width,pCodecCtx->height);*/
  
  
  
          // Save the frame to phone memory
  
            LOGI("Saving Frame\n");
  
           SaveFrame(pFrameRGB, pCodecCtx->width, pCodecCtx->height, ++i);
  
           LOGI("After Saving Frame\n");
  
        }
  
      }
  
  
  
      // Free the packet that was allocated by av_read_frame
  
      av_free_packet(&packet);
  
    }
  
  
  
    // Free the RGB image
  
    av_free(buffer);
  
    av_free(pFrameRGB);
  
  
  
    // Free the YUV frame
  
    av_free(pFrame);
  
  
  
    // Close the codec
  
    avcodec_close(pCodecCtx);
  
  
  
    // Close the video file
  
    av_close_input_file(pFormatCtx);
  
  
  
    return 0;
  
  }

  after compiling the code i get this in log,

  07-04 10:58:38.961: D/dalvikvm(1010): Trying to load lib /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so 0x4051e878
  
  07-04 10:58:38.971: D/dalvikvm(1010): Added shared lib /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so 0x4051e878
  
  07-04 10:58:38.971: D/dalvikvm(1010): No JNI_OnLoad found in /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so 0x4051e878, skipping init
  
  07-04 10:58:39.011: I/System.out(1010): Creating Engine
  
  07-04 10:58:39.011: I/mylib(1010): initiated
  
  07-04 10:58:39.011: I/System.out(1010): Decoding Video
  
  07-04 10:58:39.011: I/System.out(1010): passing video::/sdcard/NativeMedia.ts
  
  07-04 10:58:39.101: W/dalvikvm(231): disableGcForExternalAlloc: false
  
  07-04 10:58:39.121: I/DEBUG(71): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
  
  07-04 10:58:39.121: I/DEBUG(71): Build fingerprint: 'htc_asia_india/htc_icong/icong:2.3.3/GRI40/68450.5:user/release-keys'
  
  07-04 10:58:39.121: I/DEBUG(71): pid: 1010, tid: 1010  >>> ru.dzakhov.ffmpeg.test <<<
  
  07-04 10:58:39.121: I/DEBUG(71): signal 4 (SIGILL), code 1 (ILL_ILLOPC), fault addr 8102de90
  
  07-04 10:58:39.121: I/DEBUG(71):  r0 0000ac28  r1 40521b98  r2 40526340  r3 42157cc8
  
  07-04 10:58:39.121: I/DEBUG(71):  r4 bee7d368  r5 00000004  r6 40521b98  r7 42157c88
  
  07-04 10:58:39.121: I/DEBUG(71):  r8 bee7d348  r9 42157c80  10 42157c6c  fp 42f0f04c
  
  07-04 10:58:39.121: I/DEBUG(71):  ip 8102de91  sp bee7d348  lr 80018378  pc 8102de90  cpsr a0000030
  
  07-04 10:58:39.121: I/DEBUG(71):  d0  4140000041600000  d1  3ff0000041680000
  
  07-04 10:58:39.121: I/DEBUG(71):  d2  bf80000000000000  d3  0000000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  d4  0000000000000000  d5  3ff000003f800000
  
  07-04 10:58:39.121: I/DEBUG(71):  d6  bff000003f800000  d7  4160000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  d8  0000000000000000  d9  0000000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  d10 0000000000000000  d11 0000000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  d12 0000000000000000  d13 0000000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  d14 0000000000000000  d15 0000000000000000
  
  07-04 10:58:39.121: I/DEBUG(71):  scr 20000012
  
  07-04 10:58:39.221: I/DEBUG(71):          #00  pc 0002de90  /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #01  pc 0004f13c  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #02  pc 0001d584  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #03  pc 00022b8c  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #04  pc 00021a80  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #05  pc 0006060a  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #06  pc 0006828e  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #07  pc 0001d584  /system/lib/libdvm.so
  
  07-04 10:58:39.221: I/DEBUG(71):          #08  pc 00022b8c  /system/lib/libdvm.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #09  pc 00021a80  /system/lib/libdvm.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #10  pc 0006045c  /system/lib/libdvm.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #11  pc 0004c430  /system/lib/libdvm.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #12  pc 00037638  /system/lib/libandroid_runtime.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #13  pc 00038456  /system/lib/libandroid_runtime.so
  
  07-04 10:58:39.231: I/DEBUG(71):          #14  pc 00008ca2  /system/bin/app_process
  
  07-04 10:58:39.231: I/DEBUG(71):          #15  pc 00014f24  /system/lib/libc.so
  
  07-04 10:58:39.231: I/DEBUG(71): code around pc:
  
  07-04 10:58:39.231: I/DEBUG(71): 8102de70 003d9cd0 00000408 0029e598 0029e5de 
  
  07-04 10:58:39.231: I/DEBUG(71): 8102de80 0029e5d8 0029e5d8 0029e5cc 0029e5c8 
  
  07-04 10:58:39.231: I/DEBUG(71): 8102de90 4ff0e92d b0994604 f0004615 6823f945 
  
  07-04 10:58:39.231: I/DEBUG(71): 8102dea0 46294620 32a4f8d3 47982200 46044f81 
  
  07-04 10:58:39.231: I/DEBUG(71): 8102deb0 a8172300 22004621 9300447f f9c0f060 
  
  07-04 10:58:39.231: I/DEBUG(71): code around lr:
  
  07-04 10:58:39.231: I/DEBUG(71): 80018358 3497c004 3488c004 3afffff9 e2888004 
  
  07-04 10:58:39.231: I/DEBUG(71): 80018368 eafffff9 e899000c e594c008 e12fff3c 
  
  07-04 10:58:39.231: I/DEBUG(71): 80018378 e3550000 1594c00c 188c0003 e914a3f0 
  
  07-04 10:58:39.231: I/DEBUG(71): 80018388 e1a05e22 e5946004 e3a02000 e4d6c001 
  
  07-04 10:58:39.231: I/DEBUG(71): 80018398 e35c0000 0a000007 e2822001 e35c0044 
  
  07-04 10:58:39.231: I/DEBUG(71): stack:
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d308  000001b4  
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d30c  c0000000  
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d310  80018540  /system/lib/libdvm.so
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d314  0000cf98  
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d318  42157c6c  
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d31c  afd139d9  /system/lib/libc.so
  
  07-04 10:58:39.231: I/DEBUG(71):     bee7d320  0002de91  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d324  0000000e  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d328  80018540  /system/lib/libdvm.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d32c  00000070  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d330  42157c6c  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d334  00238100  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d338  00000000  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d33c  00000000  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d340  df002777  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d344  e3a070ad  
  
  07-04 10:58:39.241: I/DEBUG(71): #00 bee7d348  423692b4  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d34c  0000cf98  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d350  40521b98  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d354  8102de91  /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d358  80018540  /system/lib/libdvm.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d35c  0000cf98  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d360  bee7d368  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d364  800499df  /system/lib/libdvm.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d368  42157c80  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d36c  42d58795  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d370  8102de91  /data/data/ru.dzakhov.ffmpeg.test/lib/libmylib.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d374  bee7d418  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d378  00016de0  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d37c  0000ac28  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d380  00000001  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d384  bee7d418  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d388  42157c80  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d38c  40521b98  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d390  423692b4  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d394  800499a1  /system/lib/libdvm.so
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d398  42157c80  
  
  07-04 10:58:39.241: I/DEBUG(71):     bee7d39c  8004f13f  /system/lib/libdvm.so
  
  07-04 10:58:39.241: I/DEBUG(71): #01 bee7d3a0  00000002  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3a4  0000000e  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3a8  bee7d418  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3ac  0000cf98  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3b0  400198b8  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3b4  42d5861c  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3b8  42157c98  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3bc  bee7d410  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3c0  40521b98  
  
  07-04 10:58:39.251: I/DEBUG(71):     bee7d3c4  8001d588  /system/lib/libdvm.so

  Unable to understand what’s exact problem is there ?
  Here SaveFrame function is used it looks like,

  void SaveFrame(AVFrame *pFrame, int width, int height, int iFrame) {
  
    FILE *pFile;
  
    char szFilename[32];
  
    int  y;
  
  
  
    // Open file
  
    LOGI("Opening file!");
  
    sprintf(szFilename, "frame%d.ppm", iFrame);
  
  
  
    pFile=fopen(szFilename, "wb");
  
    if(pFile==NULL)
  
      return;
  
  
  
    // Write header
  
    fprintf(pFile, "P6\n%d %d\n255\n", width, height);
  
    //LOGI("width::"+width+"Height::"+height);
  
    // Write pixel data
  
    for(y=0; ydata[0]+y*pFrame->linesize[0], 1, width*3, pFile);
  
    }
  
    // Close file
  
    fclose(pFile);
  
  }

  in log I didn’t get any Log which i placed in the code !

  Please help me out,

  Thanks